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The Single UNIX &reg; Specification, Version 2<br>
Copyright &copy; 1997 The Open Group

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<h4><a name = "tag_000_008_075">&nbsp;</a>NAME</h4><blockquote>
remainder - remainder function
</blockquote><h4><a name = "tag_000_008_076">&nbsp;</a>SYNOPSIS</h4><blockquote>
<pre><code>

#include &lt;<a href="math.h.html">math.h</a>&gt;

double remainder(double <i>x</i>, double <i>y</i>);
</code>
</pre>
</blockquote><h4><a name = "tag_000_008_077">&nbsp;</a>DESCRIPTION</h4><blockquote>
The
<i>remainder()</i>
function returns the floating point remainder
<i>r</i> = <i>x</i> - <i>ny</i> when <i>y</i> is non-zero.
The value <i>n</i> is the integral value nearest
the exact value <i>x</i>/<i>y</i>.
When |&nbsp;<i>n</i> - <i>x</i>/<i>y</i>&nbsp;|&nbsp; = &frac12; ,
the value <i>n</i> is chosen to be even.
<p>
The behaviour of
<i>remainder()</i>
is independent of the rounding mode.
</blockquote><h4><a name = "tag_000_008_078">&nbsp;</a>RETURN VALUE</h4><blockquote>
The
<i>remainder()</i>
function returns the floating point remainder
<i>r</i> = <i>x</i> - <i>ny</i> when <i>y</i> is non-zero.
<p>
When <i>y</i> is 0,
<i>remainder()</i>
returns (NaN or equivalent if available) and sets <i>errno</i> to [EDOM].
<p>
If the value of <i>x</i> is &plusmn;Inf,
<i>remainder()</i>
returns NaN and sets <i>errno</i> to [EDOM].
<p>
If
<i>x</i>
or
<i>y</i>
is NaN, then the function returns NaN and <i>errno</i> may be set to [EDOM].
</blockquote><h4><a name = "tag_000_008_079">&nbsp;</a>ERRORS</h4><blockquote>
The
<i>remainder()</i>
function will fail if:
<dl compact>

<dt>[EDOM]<dd>The <i>y</i> argument is 0 or the <i>x</i> argument is positive or negative
infinity.

</dl>
<p>
The
<i>remainder()</i>
function may fail if:
<dl compact>

<dt>[EDOM]<dd>The <i>x</i> or <i>y</i> argument is NaN.

</dl>
</blockquote><h4><a name = "tag_000_008_080">&nbsp;</a>EXAMPLES</h4><blockquote>
None.
</blockquote><h4><a name = "tag_000_008_081">&nbsp;</a>APPLICATION USAGE</h4><blockquote>
None.
</blockquote><h4><a name = "tag_000_008_082">&nbsp;</a>FUTURE DIRECTIONS</h4><blockquote>
None.
</blockquote><h4><a name = "tag_000_008_083">&nbsp;</a>SEE ALSO</h4><blockquote>
<i><a href="abs.html">abs()</a></i>,
<i><a href="math.h.html">&lt;math.h&gt;</a></i>.
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UNIX &reg; is a registered Trademark of The Open Group.<br>
Copyright &copy; 1997 The Open Group
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